216103 has 2 divisors, whose sum is σ = 216104. Its totient is φ = 216102.

The previous prime is 216091. The next prime is 216107. The reversal of 216103 is 301612.

216103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216103 - 2⁵ = 216071 is a prime.

It is an alternating number because its digits alternate between even and odd.

216103 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108051 + 108052.

It is an arithmetic number, because the mean of its divisors is an integer number (108052).

2²¹⁶¹⁰³ is an apocalyptic number.

216103 is a deficient number, since it is larger than the sum of its proper divisors (1).

216103 is an equidigital number, since it uses as much as digits as its factorization.

216103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 216103 is about 464.8687986949. The cubic root of 216103 is about 60.0095355215.

Adding to 216103 its reverse (301612), we get a palindrome (517715).

The spelling of 216103 in words is "two hundred sixteen thousand, one hundred three".